Specifications

Transmitter Multiparameter M400 75
© 11 / 08 Mettler-Toledo AG, CH-8606 Greifensee, Switzerland Transmitter Multiparameter M400
Printed in Switzerland 52 121 378
16 Specifications
16.1 General specifications
Conductivity / resistivity Specifications
0.01 cm
–1
constant sensor 0.002 to 200 µS / cm
0.1 cm
–1
constant sensor 0.02 to 2000 µS / cm
10 cm
–1
constant sensor 10 to 40,000 µS / cm
4-electrode sensor 0.01 to 650 mS / cm
Chemical concentration curves
HCl (0.01–15%), H2SO4 (0–25%),
NaOH (0.01–13%), H3PO4 (0–35%)
Temperature input PT1000 / PT100
Temperature measuring range – 40 to + 200.0 °C (–40 to 392 °F)
Sensor maximum distance 61 m (200 ft); 15 m (50 ft with 4-E sensors)
Cond / Res accuracy
± 0.5% of reading or 0.25Ω , whichever is greater,
Up to 10 MΩ -cm
Repeatability
+ / – 0.25% of reading or 0.25 ohm,
whichever is greater
Resolution auto / 0.001 / 0.01 / 0.1 / 1 (can be selected)
Temperature resolution 0.1 °C ( 0.1 °F), (can be selected)
Temperature relative accuracy ± 0.25 °C (± 0.45 °F)
Temperature repeatability ± 0.13 °C (± 0.23 °F)
Ratings / Approvals
UL Listed, CE Compliant
pH Specifications
pH range –1.00 to 15.00 pH
pH Resolution auto / 0.01 / 0.1 / 1 (can be selected)
pH Relative accuracy ± 0.03 pH
mV range –1500 to 1500 mV
mV Resolution 1 mv
mV Relative accuracy ± 2 mV
Temperature input Pt1000 / Pt100 / NTC22K
Temperature measuring range –30 to 130 °C (22 to 266 °F)
Available Buffer Sets:
MT-9 buffers, MT-10 buffers, NIST Technical Buffers,
NIST Standard Buffers (DIN 19266:2000–01), JIS Standard, Hach buffers, CIBA (94) buffers,
Merck Titrisols-Reidel Fixanals, WTW buffers
Dissolved Oxygen Specifications
Measuring current (Air)
at 25 °C (77 °F), 1 bar (14.5 psi)
ppm: 25 nA to 130 nA / ppb: 200 nA to 550 nA
traces: 1500 nA to 6500 nA
Concentration range 0.1ppb (µg/L) to 20.00ppm (mg/L)
Relative Accuracy ± 0.5% of full scale reading
Resolution 30 pA
Temperature input NTC 22 kΩ / Pt1000
Temperature measuring range –10 to 80 °C (14 to 176 °F)